2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
11 #ifndef VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
12 #define VP9_ENCODER_VP9_SVC_LAYERCONTEXT_H_
14 #include "vpx/vpx_encoder.h"
16 #include "vp9/encoder/vp9_ratectrl.h"
28 struct vpx_fixed_buf rc_twopass_stats_in;
29 unsigned int current_video_frame_in_layer;
31 vpx_svc_parameters_t svc_params_received;
32 struct lookahead_entry *alt_ref_source;
40 int temporal_layer_id;
41 int number_spatial_layers;
42 int number_temporal_layers;
44 // Store scaled source frames to be used for temporal filter to generate
46 YV12_BUFFER_CONFIG scaled_frames[MAX_LAG_BUFFERS];
48 // Layer context used for rate control in one pass temporal CBR mode or
49 // two pass spatial mode. Defined for temporal or spatial layers for now.
50 // Does not support temporal combined with spatial RC.
51 LAYER_CONTEXT layer_context[MAX(VPX_TS_MAX_LAYERS, VPX_SS_MAX_LAYERS)];
56 // Initialize layer context data from init_config().
57 void vp9_init_layer_context(struct VP9_COMP *const cpi);
59 // Update the layer context from a change_config() call.
60 void vp9_update_layer_context_change_config(struct VP9_COMP *const cpi,
61 const int target_bandwidth);
63 // Prior to encoding the frame, update framerate-related quantities
64 // for the current temporal layer.
65 void vp9_update_temporal_layer_framerate(struct VP9_COMP *const cpi);
67 // Update framerate-related quantities for the current spatial layer.
68 void vp9_update_spatial_layer_framerate(struct VP9_COMP *const cpi,
71 // Prior to encoding the frame, set the layer context, for the current layer
72 // to be encoded, to the cpi struct.
73 void vp9_restore_layer_context(struct VP9_COMP *const cpi);
75 // Save the layer context after encoding the frame.
76 void vp9_save_layer_context(struct VP9_COMP *const cpi);
78 // Initialize second pass rc for spatial svc.
79 void vp9_init_second_pass_spatial_svc(struct VP9_COMP *cpi);
81 // Increment number of video frames in layer
82 void vp9_inc_frame_in_layer(SVC *svc);
84 // Check if current layer is key frame in spatial upper layer
85 int vp9_is_upper_layer_key_frame(const struct VP9_COMP *const cpi);
87 // Copy the source image, flags and svc parameters into a new framebuffer
88 // with the expected stride/border
89 int vp9_svc_lookahead_push(const struct VP9_COMP *const cpi,
90 struct lookahead_ctx *ctx, YV12_BUFFER_CONFIG *src,
91 int64_t ts_start, int64_t ts_end,
94 // Get the next source buffer to encode
95 struct lookahead_entry *vp9_svc_lookahead_pop(struct VP9_COMP *const cpi,
96 struct lookahead_ctx *ctx,
99 // Get a future source buffer to encode
100 struct lookahead_entry *vp9_svc_lookahead_peek(struct VP9_COMP *const cpi,
101 struct lookahead_ctx *ctx,
102 int index, int copy_params);
108 #endif // VP9_ENCODER_VP9_SVC_LAYERCONTEXT_